What color was that sound?
"Green is the colour" – Pink Floyd
"Orange Colored Sky" – Nat King Cole
"Blue in Green" – Miles Davis
"Yellow" – Coldplay
"Mood Indigo" – Duke Ellington
We don’t just hear music—we see it. A song can feel golden and warm, like late afternoon light, or deep blue, like the quiet after rain. Some sounds glow neon, others fade into soft pastels. Whether it’s a real synesthetic response or just something we’ve come to associate over time, there’s this unspoken link between color and sound.
At its core, this connection is rooted in frequency. Both sound waves and light waves operate on spectrums—sound frequencies measured in Hertz (Hz) and light frequencies in terahertz (THz). While they exist in different domains, they share a fundamental structure: just as lower sound frequencies create deep, resonant tones, longer wavelengths of light give us warm reds and oranges. Higher sound frequencies produce crisp, bright notes, much like the shorter wavelengths of light that create blues and violets. Music isn’t just sound waves—it’s color, emotion, and memory, all tangled up together.
| This MAX patch maps MIDI notes to hues, with pitch determining color and key velocity determing saturation. |
| This demo in python devides the screen into three regions—left, middle, and right—each mapped to a specific pitch set (C major, F major, G7) and hue (reddish-orange, blueish-green, yellow). A click generates a random pitch from the region and determines the color's saturation and the radius of the visual output. |